I have a '95 C1500 with a TBI 4.3 and 4L60E transmission. I have a TBI 305 from a '89 C1500 with a 700R4. I want to put the 305 in my truck and still use the 4L60E, but have a few questions: 1. I look at the exhaust manifolds and they appear to connect to the y-pipe in the same location. Will the 305 manifolds connect to the 4.3 y-pipe? 2. Does my computer control my 4L60E transmission? My truck has a 4L60E, the donor truck had a 700R4. Will the computer chip from the 305/700R4 computer work with the new 305/4L60E combo? Or will I need a 305/4L60E chip? 3. Are the engine wiring harnesses any different? 4. Will my tachometer for the 4.3 work with the V8? Will it be accurate? 5. Any comments or suggestions are welcome. My truck has a good running 4.3 with 190,000 miles, but I want to swap to a V8 for more power. The 305 will be fine for now until I can swap in a built 350. Thanks.